| Title: | "Contact sex pheromone components of the cowpea weevil, Callosobruchus maculatus" |
| Author(s): | Nojima S; Shimomura K; Honda H; Yamamoto I; Ohsawa K; |
| Address: | "Laboratory of Biofunctional Molecular Analysis, Department of Bioscience, Faculty of Applied Bioscience, Tokyo University of Agriculture, 1-1-1, Sakuragaoka, Setagaya-ku, Tokyo, 156-8502, Japan. toshi_nojima@ncsu.edu" |
| DOI: | 10.1007/s10886-007-9266-5 |
| ISSN/ISBN: | 0098-0331 (Print) 0098-0331 (Linking) |
| Abstract: | "The cowpea weevil, Callosobruchus maculatus, is a major pest of stored pulses. Females of this species produce a contact sex pheromone that elicits copulation behavior in males. Pheromone was extracted from filter-paper shelters taken from cages that housed females. Crude ether extract stimulated copulation in male C. maculatus. Initial fractionation showed behavioral activity in acidic and neutral fractions. Furthermore, bioassay-guided fractionation and gas chromatography-mass spectroscopy (GC-MS) analysis of active fractions revealed that the active components of the acidic fraction were 2,6-dimethyloctane-1,8-dioic acid and nonanedioic acid. These components along with the hydrocarbon fraction, a mixture of C(27)-C(35) straight chain and methyl branched hydrocarbons, had a synergistic effect on the behavior of males. Glass dummies treated with an authentic pheromone blend induced copulation behavior in males. The potential roles of the contact sex pheromone of C. maculatus are discussed" |
| Keywords: | "Acyclic Monoterpenes Animals Dicarboxylic Acids/analysis/pharmacology Female Hydrocarbons/analysis/pharmacology Male Sex Attractants/*isolation & purification/*pharmacology Sexual Behavior, Animal/*drug effects/physiology Weevils/*physiology;" |
| Notes: | "MedlineNojima, Satoshi Shimomura, Kenji Honda, Hiroshi Yamamoto, Izuru Ohsawa, Kanju eng 2007/03/31 J Chem Ecol. 2007 May; 33(5):923-33. doi: 10.1007/s10886-007-9266-5. Epub 2007 Mar 30" |
